CopyrightHEF-4316 - HEF-40208 DATAcopyright

    HEF4000 series LOCMOS IC's: HEF4316 to HEF40208

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    The very useful building blocks HEF / CD 4000 series of LOCMOS logic IC's.
    Please note, we currently stock some of the listed chips on this page, however
other HEF 4000 or CD series we can order these in depending on "lead" times.

Email us :sales@unitechelectronics.com



    HEF-4316
  Quad analog switches with enable input and dual power  supply.
  VEE supply may not be more positive than GND. 
      +---+--+---+
   1X |1  +--+ 16| VCC
   1Y |2       15| 1EN
   2Y |3       14| 4EN
   2X |4       13| 4X2
   EN |5  4316 12| 4Y3
   EN |6       11| 3Y
   EN |7       10| 3X
  GND |8        9| VEE
      +----------+

    HEF-4351
  8-to-1 line analog multiplexer/demultiplexer with address latch 
  and dual power supply. VEE supply may not be more positive than GND. 
      +---+--+---+
  1X0 |1  +--+ 18| VCC
  1X1 |2       17| X2
  2X1 |3       16| X1
   2Y |4       15| X0
  2X0 |5  4351 14| X3
  /EN |6       13| S0
   EN |7       12| S1
  VEE |8       11| S2
  GND |9       10| LE
      +----------+
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    HEF-4352   8-to-2 line analog multiplexer/demultiplexer with address latch and   dual power supply. VEE supply may not be more positive than GND. +---+--+---+ 1X0 |1 +--+ 18| VCC 1X2 |2 17| 2X2 1Y |3 16| 2X1 1X3 |4 15| 2Y 1X1 |5 4352 14| 2X0 /EN |6 13| 2X3 EN |7 12| S0 VEE |8 11| S1 GND |9 10| LE +----------+


    HEF-4353
  Triple 2-to-1 line analog multiplexer/demultiplexer with address latch
  and dual power supply. VEE supply may not be more positive than GND. 
      +---+--+---+
  1X0 |1  +--+ 18| VCC
  1X1 |2       17| 1Y
  2X1 |3       16| 3Y
   2Y |4       15| 3X1
  2X0 |5  4353 14| 3X0
  /EN |6       13| 3S
   EN |7       12| 1S
  VEE |8       11| 2S
  GND |9       10| LE
      +----------+

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    HEF-4500
  An Industrial Control Unit. RISC, An Alternative is the 'MC14500B , this I.C.
  can be seen in the Industrial Control Unit Handbook' from Freescale (Motorola).
     +---+--+---+
  RST |1  +--+ 16| VCC
   WR |2       15| RR
    D |3       14| X0
   I3 |4       13| X1
   I2 |5  4500 12| JMP
   I1 |6       11| RTN
   I0 |7       10| FLG0
  GND |8        9| FLGF
      +----------+

    HEF-4502
  6-bit  3-state inverting buffer/line driver with NOR inputs. 
      +---+--+---+             +---+---+---+---+
   A0 |1  +--+ 16| VCC         |/OE| A | B I/Y |
  /Y0 |2       15| A5          +===+===+===+===+
   A1 |3       14| /Y5         | 1 | X | X I Z |
  /OE |4       13| A4          | 0 | 0 | 0 I 1 |
  /Y1 |5  4502 12| B           | 0 | 1 | 0 I 0 |
   A2 |6       11| /Y4         | 0 | X | 1 I 0 |
  /Y2 |7       10| A3          +---+---+---+---+
  GND |8        9| /Y3
      +----------+

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    HEF-4503
  2 / 4-bit  3-state noninverting buffer / line driver. 
       +---+--+---+            +---+---+---+
  /1OE |1  +--+ 16| VCC        |/OE| A I Y |
   1A1 |2       15| /2OE       +===+===+===+
   1Y1 |3       14| 2A2        | 1 | X I Z |
   1A2 |4       13| 2Y2        | 0 | 0 I 0 |
   1Y2 |5  4503 12| 2A1        | 0 | 1 I 1 |
   1A3 |6       11| 2Y1        +---+---+---+
   1Y3 |7       10| 1A4
   GND |8        9| 1Y4
       +----------+

    HEF-4508
  Dual 4-bit  3-state transparent latch with reset. 
       +-----+--+-----+        +---+---+---+---+
  1RST |1    +--+   24| VCC    |/OE| LE| D I Q |
   1LE |2           23| 2Q3    +===+===+===+===+
  /1OE |3           22| 2D3    | 1 | X | X I Z |
   1D0 |4           21| 2Q2    | 0 | 0 | X I - |
   1Q0 |5           20| 2D2    | 0 | 1 | 0 I 0 |
   1D1 |6           19| 2Q1    | 0 | 1 | 1 I 1 |
   1Q1 |7    4508   18| 2D1    +---+---+---+---+
   1D2 |8           17| 2Q0
   1Q2 |9           16| 2D0
   1D3 |10          15| /2OE
   1Q3 |11          14| 2LE
   GND |12          13| 2RST
       +--------------+

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    HEF-4510
  4-bit synchronous decade up/down counter with asynchronous 
  load,  reset and ripple carry output. 
       +---+--+---+
    LD |1  +--+ 16| VCC
    Q3 |2       15| CLK
    P3 |3       14| Q2
    P0 |4       13| P2
  /RCI |5  4510 12| P1
    Q0 |6       11| Q1
  /RCO |7       10| UP//DN
   GND |8        9| RST
       +----------+

    HEF-4512
  8-to-1 line 3-state data selector / multiplexer with AND inputs. 
      +---+--+---+
   A0 |1  +--+ 16| VCC         Y = An./B
   A1 |2       15| /OE
   A2 |3       14| Y
   A3 |4       13| S2
   A4 |5  4512 12| S1
   A5 |6       11| S0
   A6 |7       10| /B
  GND |8        9| A7
      +----------+

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    HEF-4514
  1-of-16 non-inverting decoder / demultiplexer with address latches. 
      +---+--+---+
   LE |1  +--+ 24| VCC
   S0 |2       23| /EN
   S1 |3       22| S3
   Y7 |4       21| S2
   Y6 |5       20| Y10
   Y5 |6       19| Y11
   Y4 |7  4514 18| Y8
   Y3 |8       17| Y9
   Y2 |9       16| Y15
   Y1 |10      15| Y14
   Y0 |11      14| Y13
  GND |12      13| Y12
      +----------+

    HEF-4516
  4-bit synchronous binary up/down counter with asynchronous 
  load, reset andripple carry output. 
       +---+--+---+
    LD |1  +--+ 16| VCC
    Q3 |2       15| CLK
    P3 |3       14| Q2
    P0 |4       13| P2
  /RCI |5  4516 12| P1
    Q0 |6       11| Q1
  /RCO |7       10| UP//DN
   GND |8        9| RST
       +----------+

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    HEF-4518
  Dual 4-bit asynchronous decade counters with reset 
  and both active high andactive low clocks. 
        +---+--+---+
   1CLK |1  +--+ 16| VCC
  /1CLK |2       15| 2RST
    1Q0 |3       14| 2Q3
    1Q1 |4       13| 2Q2
    1Q2 |5  4518 12| 2Q1
    1Q3 |6       11| 2Q0
   1RST |7       10| /2CLK
    GND |8        9| 2CLK
        +----------+

    HEF-4521
  24-bit asynchronous binary counter with oscillator and Res. For the 
  buffer to be used, GND' at input,and one CMOS buffer with separate 
  power supply.Q0 ... Q17 outputs are missing. and VCC' must be 
  connected to GND and VCC (optionally using series resistors).eg: 47ohm.
       +---+--+---+            +---+---+
   Q24 |1  +--+ 16| VCC        | A I Y |
   RST |2       15| Q23        +===+===+
  GND' |3       14| Q22        | 0 I 0 |
     Y |4       13| Q21        | 1 I 1 |
  VCC' |5  4521 12| Q20        +---+---+
     A |6       11| Q19
    X0 |7       10| Q18
   GND |8        9| X1
       +----------+

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    HEF-4527
  4-bit synchronous decade rate multiplier. 
       +---+--+---+
    Q9 |1  +--+ 16| VCC
    D2 |2       15| D1
    D3 |3       14| D0
  SET9 |4       13| RST
    /Q |5  4527 12| CASC
     Q |6       11| CIN
  COUT |7       10| STB
   GND |8        9| CLK
       +----------+

    HEF-4532
  8-to-3 line noninverting priority encoder with cascade inputs. 
      +---+--+---+
   A4 |1  +--+ 16| VCC
   A5 |2       15| EO
   A6 |3       14| GS
   A7 |4       13| A3
   EI |5  4532 12| A2
   Y2 |6       11| A1
   Y1 |7       10| A0
  GND |8        9| Y0
      +----------+

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    HEF-4536
  A 24-bit programmable frequency divider / digital timer with oscillator,
  set and reset inputs. Digitally programmable from 2^1 to 2^24. Connect 
  MONO via a >10k resistor to ground for square wave output,or to 
  a RC network (R to VCC) for a controlled output pulse width.Maximum 
  Maximum guaranteed clock frequency is 500kHz or less.
          +---+--+---+
      SET |1  +--+ 16| VCC
      RST |2       15| MONO
       X1 |3       14| /XEN
       X0 |4       13| Q
       X2 |5  4536 12| S3
  /DIV256 |6       11| S2
    CLKEN |7       10| S1
      GND |8        9| S0
          +----------+

    HEF-4538
  Dual precision monostable multivibrator with Schmitt-trigger inputs.
  Retriggerable, resettable.For 74HC4538 the Cext pins may be grounded. 
         +---+--+---+
   1Cext |1  +--+ 16| VCC
  1RCext |2       15| 2Cext
    1RST |3       14| 2RCext
     1TR |4       13| 2RST
    /1TR |5  4538 12| 2TR
      1Q |6       11| /2TR
     /1Q |7       10| 2Q
     GND |8        9| /2Q
         +----------+

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    HEF-4543
  BCD to 7-segment decoder / LCD driver with input latch.
  The P ( Phase ) input should be connected to the backplane 
  of the LCD.
      +---+--+---+
   LE |1  +--+ 16| VCC
   A2 |2       15| YF
   A1 |3       14| YG
   A3 |4       13| YE
   A0 |5  4543 12| YD
    @ |6       11| YC
   BI |7       10| YB
  GND |8        9| YA
      +----------+

    HEF-4555
  Dual 1-of-4 non-inverting decoder / demultiplexer. 
       +---+--+---+            +---+---+---+---+---+---+---+
  /1EN |1  +--+ 16| VCC        |/EN| S1| S0I Y0| Y1| Y2| Y3|
   1S0 |2       15| /2EN       +===+===+===+===+===+===+===+
   1S1 |3       14| 2S0        | 1 | X | X I 0 | 0 | 0 | 0 |
   1Y0 |4       13| 2S1        | 0 | 0 | 0 I 1 | 0 | 0 | 0 |
   1Y1 |5  4555 12| 2Y0        | 0 | 0 | 1 I 0 | 1 | 0 | 0 |
   1Y2 |6       11| 2Y1        | 0 | 1 | 0 I 0 | 0 | 1 | 0 |
   1Y3 |7       10| 2Y2        | 0 | 1 | 1 I 0 | 0 | 0 | 1 |
   GND |8        9| 2Y3        +---+---+---+---+---+---+---+
       +----------+

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    HEF-4556
  Dual 1-of-4 inverting decoder / demultiplexer. 
       +---+--+---+            +---+---+---+---+---+---+---+
  /1EN |1  +--+ 16| VCC        |/EN| S1| S0I/Y0|/Y1|/Y2|/Y3|
   1S0 |2       15| /2EN       +===+===+===+===+===+===+===+
   1S1 |3       14| 2S0        | 1 | X | X I 1 | 1 | 1 | 1 |
  /1Y0 |4       13| 2S1        | 0 | 0 | 0 I 0 | 1 | 1 | 1 |
  /1Y1 |5  4556 12| /2Y0       | 0 | 0 | 1 I 1 | 0 | 1 | 1 |
  /1Y2 |6       11| /2Y1       | 0 | 1 | 0 I 1 | 1 | 0 | 1 |
  /1Y3 |7       10| /2Y2       | 0 | 1 | 1 I 1 | 1 | 1 | 0 |
   GND |8        9| /2Y3       +---+---+---+---+---+---+---+
       +----------+

    HEF-4580
  4 x 4-bit  3-state synchronous triple-port register file. 
       +-----+--+-----+
   1Q3 |1    +--+   24| VCC
   1Q2 |2           23| 1Q1
   1RD |3           22| 1Q0
   2Q0 |4           21| 2RD
   2Q1 |5           20| D0
   2Q2 |6           19| D1
   2Q3 |7   40108   18| D2
   WA0 |8           17| D3
   WA1 |9           16| WCLK
  2RA1 |10          15| WR
  2RA0 |11          14| 1RA1
   GND |12          13| 1RA0
       +--------------+

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    HEF-4585
  4-bit non-inverting magnitude comparator with cascade inputs. 
       +---+--+---+
    B2 |1  +--+ 16| VCC
    A2 |2       15| A3
  OA=B |3       14| B3
  IA>B |4       13| OA>B
  IA<B |5  4585 12| OA<B
  IA=B |6       11| B0
    A1 |7       10| A0
   GND |8        9| B1
       +----------+

    HEF-4599
  1-of-8 addressable latch with readback and reset. 
      +---+--+---+
   Q7 |1  +--+ 18| VCC
  RST |2       17| Q6
    D |3       16| Q5
  /WR |4       15| Q4
   A0 |5  4599 14| Q3
   A1 |6       13| Q2
   A2 |7       12| Q1
   CE |8       11| Q0
  GND |9       10| /RD
      +----------+

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    14500
  Another excellent Industrial Control Unit.
  RISC. An Alternative is the 'MC14500B 
  Industrial Control Unit Handbook' from Freescale (Motorola)
      +---+--+---+
  RST |1  +--+ 16| VCC
   WR |2       15| RR
    D |3       14| X0
   I3 |4       13| X1
   I2 |5 14500 12| JMP
   I1 |6       11| RTN
   I0 |7       10| FLG0
  GND |8        9| FLGF
      +----------+

    HEF-40108
  4 x 4-bit  3-state synchronous triple-port register file. 
       +-----+--+-----+
   1Q3 |1    +--+   24| VCC
   1Q2 |2           23| 1Q1
   1RD |3           22| 1Q0
   2Q0 |4           21| 2RD
   2Q1 |5           20| D0
   2Q2 |6           19| D1
   2Q3 |7   40108   18| D2
   WA0 |8           17| D3
   WA1 |9           16| WCLK
  2RA1 |10          15| WR
  2RA0 |11          14| 1RA1
   GND |12          13| 1RA0
       +--------------+

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    HEF-40208
  4 x 4-bit  3-state synchronous triple-port register file. 
       +-----+--+-----+
   1Q3 |1    +--+   24| VCC
   1Q2 |2           23| 1Q1
   1RD |3           22| 1Q0
   2Q0 |4           21| 2RD
   2Q1 |5           20| D0
   2Q2 |6           19| D1
   2Q3 |7   40208   18| D2
   WA0 |8           17| D3
   WA1 |9           16| WCLK
  2RA1 |10          15| WR
  2RA0 |11          14| 1RA1
   GND |12          13| 1RA0
       +--------------+

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can occur and it is for this very reason, we provide the above information "as is" 
with "no Warranty" as to "correctness" nor to its "accuracy". Please, always 
check  with your " own data books "  or via a "Google" search on the net.
Please notify us if you have discovered a typographical error and we will fix it.
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This page was upgraded December 31st 2013